Fast switching Prussian blue film by modification with cetyltrimethylammonium bromide

2012 ◽  
Vol 99 ◽  
pp. 129-134 ◽  
Author(s):  
Dung-Jing Yang ◽  
Chih-Yu Hsu ◽  
Cheng-Lan Lin ◽  
Po-Yen Chen ◽  
Chih-Wei Hu ◽  
...  
Keyword(s):  
Prussian Blue ◽  
Cetyltrimethylammonium Bromide ◽  
Fast Switching

scholarly journals A fast-switching light-writable and electric-erasable negative photoelectrochromic cell based on Prussian blue films

2012 ◽  
Vol 98 ◽  
pp. 154-160 ◽  
Author(s):  
Zhihui Jiao ◽  
Jun Ling Song ◽  
Xiao Wei Sun ◽  
Xue Wei Liu ◽  
Jin Min Wang ◽  
...  
Keyword(s):  
Prussian Blue ◽  
Fast Switching

Electrochromic Studies of Prussian Blue Intercalated Compounds

2008 ◽  
Vol 587-588 ◽  
pp. 288-292 ◽  
Author(s):  
L.F.F.T.T.G. Rodrigues ◽  
César A.C. Sequeira
Keyword(s):  
Prussian Blue ◽  
Film Formation ◽  
Supporting Electrolyte ◽  
Electrochemical Technique ◽  
Solution Ph ◽  
Switching Speed ◽  
Film Stability ◽  
Fast Switching ◽  
Intercalated Compounds ◽  
Related Compounds

The electrochromic response of the Prussian blue (PB) system is produced by the electrochemical reaction of the colourless Everitt’s salt (ES), K2FeFe(CN)6, to form the blue oxidation product, KFeFe(CN)6. Reviews on the electrochemistry of PB and related compounds are available. Very little work, however, has been published on the quantitative aspects that affect film stability. The reported electrochemical deposition conditions for PB film formation vary considerably in terms of the electrochemical technique, pH, ferricyanide concentration, supporting electrolyte, as well as composition and concentration of the iron (III) salt. In this study, most PB films were prepared at ambient temperature from acidic K2SO4/H2SO4 (pH ≅ 2.0) solutions containing either Fe(ClO4)3 or FeCl3 and K3Fe(CN)6, using potentiostatic conditions. Dramatic increases in the film stability are obtained by simple acidifying; in fact, the switching speed increased from about 2 seconds at a pH of 7 to about 0.2 seconds at a pH of 2. Cycle lifetimes of at least 100,000 cycles were obtained in all of the acidified solutions. Factors such as the solution pH and heat treatment of the PB film also affect the position and shape of the observed cyclic voltammetric peaks. Summarizing, the PB films prepared by an electrodeposition method appear to be very promising for reaching stable, reversible and fast switching time (2 Hz) materials.

Iron Loss Characteristics of Motors Fed by Fast Switching GaN-FET Inverters

2020 ◽  
Vol 140 (6) ◽  
pp. 488-494
Author(s):  
Haruo Naitoh ◽  
Takaya Sugimoto ◽  
Keisuke Fujisaki
Keyword(s):  
Iron Loss ◽  
Fast Switching ◽  
Gan Fet

New Structure of CTAB Templated Silica Films as revealed by GISAXS coupled to HRTEM

2000 ◽  
Vol 628 ◽  
Author(s):  
Sophie Besson ◽  
Catherine Jacquiod ◽  
Thierry Gacoin ◽  
André Naudon ◽  
Christian Ricolleau ◽  
...  
Keyword(s):  
Cetyltrimethylammonium Bromide ◽  
Grazing Incidence ◽  
Hexagonal Structure ◽  
X Ray Diffraction ◽  
Electronic Microscopy ◽  
Silica Films ◽  
X Ray ◽  
X Ray Scattering ◽  
Hexagonal Arrangement ◽  
Spherical Micelles

ABSTRACTA microstructural study on surfactant templated silica films is performed by coupling traditional X-Ray Diffraction (XRD) and Transmission Electronic Microscopy (TEM) to Grazing Incidence Small Angle X-Ray Scattering (GISAXS). By this method it is shown that spin-coating of silicate solutions with cationic surfactant cetyltrimethylammonium bromide (CTAB) as a templating agent provides 3D hexagonal structure (space group P63/mmc) that is no longer compatible with the often described hexagonal arrangement of tubular micelles but rather with an hexagonal arrangement of spherical micelles. The extent of the hexagonal ordering and the texture can be optimized in films by varying the composition of the solution.

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